UASTP I — Plant Summary
- EIA Plant ID
- 57392
- Capacity
- 1.2 MW
- Primary Fuel
- Solar
- Technology
- Solar Photovoltaic
- Status
- Operating
- Location
- Pima, AZ
- Operating Since
- 2010
- Generators
- 1
- Operator
- Tucson Electric Power Co
- Parent Company
- Fortis
- Annual Generation
- 1,591 MWh
- Capacity Factor
- 15.1%
- Balancing Authority
- Tucson Electric Power Company
- ISO/RTO
- —
- NERC Region
- WECC
UASTP I
OperatingSolar
Ranked #95 of 104 Solar plants in AZ#6522 of 7447 nationally
1.2 MW Solar operating in Pima, AZ — Tucson Electric Power Company
EIAGEMWD
1.2 MW
Nameplate Capacity
1
Generators
unit
Solar Photovoltaic
Technology
2010
Operating Since
Location
Coordinates
32.0996, -110.8111
County
Pima, AZ
Nearby Plants
- Cogenra - TEPSolar1 MW · 0.3 km
- Tech Park SolarSolar5 MW · 0.5 km
- Gato Montes Solar, LLCSolar5 MW · 0.8 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Tucson Electric Power Co | Tucson Electric Power | — |
| Owner(s) | Tucson Electric Power Co | Fortis | — |
| Status | Operating | operating | — |
Ownership Chain
About
UASTP I is a 1.2 MW solar photovoltaic power plant located in Pima County, Arizona. The plant began operating in 2010 and has one generator. It is owned by Fortis, a Canadian company, and operated by Tucson Electric Power Co. The primary fuel source is solar energy. The plant utilizes single-axis tracking technology to maximize solar energy capture.
The plant operates within the Tucson Electric Power Company balancing authority and the Western Electricity Coordinating Council (WECC) NERC region. In terms of size, UASTP I is ranked 83rd out of 93 power plants in Arizona, and 6138th out of 7108 nationally. The latest annual generation data indicates an output of 1,591 MWh, resulting in a capacity factor of 15.1%.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
Tucson Electric Power Company
Grid Voltage
13.8 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
Generation
9 MWh
Latest Month
1.6K MWh
Annual Generation
15.1%
Capacity Factor
Jan 2022 – Dec 2024
Financial Data
No financial data available for this plant.
Pricing & Market Data
This plant is outside organized wholesale electricity markets (ISOs/RTOs). Nodal pricing data is not available.
News & Articles (4)Beta
General
Tucson Electric Power to build another big battery system to meet peak power demand
Tucson Electric Power plans to build a second, large battery system in southeast Tucson to store solar and other energy until later in the day to meet peak...
Arizona Daily Star·1 years ago
General
Tucson Electric turns on its biggest renewable-energy plants to date
Tucson Electric Power has switched on its biggest solar farm yet, with its biggest wind project set to go online soon.
Arizona Daily Star·4 years ago
General
Tucson Electric Power's biggest solar farm taking shape south of the city
The Wilmot Energy Center will churn out clean energy even when the sun goes down, with a 30-megawatt battery system.
Arizona Daily Star·5 years ago
General
Power line to connect TEP's biggest solar project closer to final approval
A power-line project to connect what will be Southern Arizona's biggest solar-energy farm to Tucson Electric Power Co.'s grid is headed to final approval by...
Arizona Daily Star·5 years ago
Last updated 2026-03-26
View all articles